Blog | Terrapex

Terrapex is pleased to announce the appointment of Allan Li-Ping-King, M.Sc.Env. as Branch Manager of our Durham Office

A long-standing member of the Terrapex team, Allan brings deep experience, technical excellence, and a practical, client-focused approach to this leadership role. His commitment to delivering high-quality service has made a lasting impact across our projects and teams. Under Allan’s leadership, we look forward to strengthening our presence in the Durham region and continuing to provide technically sound, practical, and personalized consulting services within the environmental,...

November 7, 2025Read more...

Terrapex is pleased to announce the appointment of Zen Keizars, P.Geo., FGC to the positionof Manager, Hydrogeology.

A licensed Professional Geoscientist (P.Geo.) in Ontario, Alberta, and British Columbia, Zen has been a valued member of the Terrapex team since 2020, bringing deep consulting expertise in hydrogeology, eco-hydrogeology, environmental assessment, and groundwater resource management. Zen is widely recognized for his technical excellence, strategic insight, and commitment to advancing geoscience practice. Zen is actively engaged in public service and professional development. He has previously served multiple...

September 9, 2025Read more...

Advocating for Responsible Change: A Letter of Support That Reflects Who We Are

At Terrapex, we believe that meaningful policy change begins with thoughtful collaboration and a commitment to integrity. Recently, we submitted a letter of support to the City of Toronto for proposed policy updates at that aim to support the construction of much-needed housing in Ontario's capital and Canada's largest city.Our letter of support isn't a lobby effort, or an action take with a political objective....

August 18, 2025Read more...

Welcome, Richard Davies

Terrapex is pleased to welcome Richard Davies as our new Health and Safety Manager. With significant experience in environmental compliance, occupational health and safety, and regulatory guidance dating back to 2006, Richard brings a wealth of knowledge and expertise to our team. In this role, Richard will be responsible for developing and implementing health and safety programs, conducting risk assessments, ensuring compliance with industry regulations, and...

February 21, 2025Read more...

Terrapex announces internal promotion to manage Environmental Risk Assessment business unit

Terrapex is extremely pleased to announce the promotion of Elizabeth (Liz) Madden to the role of Manager, Risk Assessment in our Environmental service line! Part of the Terrapex team since 2011, Liz has considerable experience in environmental site assessment and remediation, human health and ecologic risk assessment, risk management, and soil/sub-slab vapour and indoor air sampling at contaminated properties. Recognized by the Ontario Ministry of the Environment, Conservation and Parks...

November 4, 2024Read more...

Welcome, Michelle Letourneau

Terrapex is extremely pleased to welcome Michelle Letourneau as both our newest Senior Biologist, and our Manager of Ecological Services. Michelle has more than 17 years of experience in assessing and protecting aquatic ecosystems throughout Canada, the United States, and South America. A self-described “problem solver who loves to get her feet muddy and her hands wet”, Michelle is committed to ecological excellence from the moment...

October 28, 2024Read more...

Presenting at the 2024 Excess Soils Symposium

Don’t miss Terrapex’s Shannon Hunt and Peter Sutton as they presenting at this year’s Excess Soils Symposium in downtown Toronto! As chair of the Qualified Persons Community of Ontario (QPCO) Excess Soil committee, Shannon will be part of a panel representing QPCO as they present their best practices guideline for reuse sites. The best practices guideline is intended to provide guidance to owners and operators of...

October 15, 2024Read more...

Terrapex’s Zen Keizars Sworn in as PGO Vice President

We are pleased to congratulate our own Zen Keizars on becoming the new Vice President of Professional Geoscientists Ontario (PGO), carrying on a Terrapex tradition of giving back to our industry and our communities at large! Zen previously served as President of PGO in 2018 and 2019, overseeing the organization’s rebranding to PGO, the welcoming of Tony Andrew as the new CEO of PGO, and a...

July 15, 2024Read more...

Presenting at SmartRemediation Conferences

Terrapex’s Paul H. Cheung and Jennifer O’Grady are presenting at this year’s SmartRemediation conferences in Toronto and Ottawa, respectively. Paul and Jennifer are talking about 6PPD-q, an emerging contaminant that has been determined to have significant toxicity to certain fish species at the parts per trillion concentrations level (yes, trillions!). 6PPD-q is the quinone of 6p-phenylenediamine (6PPD), a common rubber antiozonant, particularly in vehicle tires. Although...

February 1, 2024Read more...

Terrapex Welcomes Yacouba Doro as Senior Geotechnical Engineer and Project Manager – Ottawa Office

Terrapex is extremely pleased to announce that Yacouba Doro has joined our Ottawa office as a Senior Geotechnical Engineer and Project Manager!Yacouba is a bilingual (English and French) licensed Professional Engineer and Project Management Professional with more than 16 years of experience in conducting geotechnical investigations and material inspection and testing work programs. He holds a bachelor degree in civil engineering from University of District of Columbia...

December 20, 2023Read more...